Abstract

This study used a replicative lifespan assay of K6001 yeast to screen anti-aging food factors in commercial flavonoids. Hesperidin derived from the Citrus genus extended the lifespan of yeast at doses of 5 and 10 ?M as compared with the control group (p<0.01, p<0.01). Reactive oxygen species (ROS), real-time PCR (RT-PCR), and lifespan assays of uth1 and skn7 mutants with the K6001 background were used to study the anti-aging mechanisms in yeast. The results indicate that hesperidin significantly inhibits the ROS of yeast, and UTH1 gene expression, and that SKN7 gene are involved in hesperidin-mediated lifespan extension. Further, increases in the Sir2 homolog, SIRT1 activity, and SOD gene expression were confirmed at doses of 5 (p<0.01) and 10 ?M (p<0.05). This suggests that Sir2, UTH1 genes, and ROS inhibition after administration of hesperidin have important roles in the anti-aging effects of yeast. However, the aglycon hesperetin did not exhibit anti-aging effects in yeast.

Interaction Annotations

Increase the total number of rows showing on this page by using the pull-down located below the table, or use the
page scroll at the table's top right to browse through the table's pages; use the arrows to the right of a column
header to sort by that column; filter the table using the "Filter" box at the top of the table; click on the small
"i" buttons located within a cell for an annotation to view further details about experiment type and any other
genes involved in the interaction.

Gene Ontology Annotations

Increase the total number of rows showing on this page using the pull-down located below the table, or use the page
scroll at the table's top right to browse through the table's pages; use the arrows to the right of a column header
to sort by that column; filter the table using the "Filter" box at the top of the table.

Phenotype Annotations

Increase the total number of rows showing on this page using the pull-down located below the table, or use the page
scroll at the table's top right to browse through the table's pages; use the arrows to the right of a column header
to sort by that column; filter the table using the "Filter" box at the top of the table; click on the small "i"
buttons located within a cell for an annotation to view further details.

Regulation Annotations

Increase the total number of rows displayed on this page using the pull-down located below the table, or use the
page scroll at the table's top right to browse through the table's pages; use the arrows to the right of a column
header to sort by that column; to filter the table by a specific experiment type, type a keyword into the Filter box
(for example, “microarray”); download this table as a .txt file using the Download button or click Analyze to
further view and analyze the list of target genes using GO Term Finder, GO Slim Mapper, SPELL, or YeastMine.

Expression Datasets

Increase the total number of rows displayed on this page using the pull-down located below the table, or use the
page scroll at the table's top right to browse through the table's pages; use the arrows to the right of a column
header to sort by that column; filter the table using the "Filter" box at the top of the table; download this table
as a .txt file using the Download button;